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Table 1 Number of workers and exposure dose (mSv) according to occupation type in Korea

From: Radiation-related occupational cancer and its recognition criteria in South Korea

Year 2010 2011 2012 2013 2014
Category Number of workers Mean dose Number of workers Mean dose Number of workers Mean dose Number of workers Mean dose Number of workers Mean dose
Radiation workers Medical institutes 3833 0.99 4133 0.96 4376 0.87 4734 0.73 5038 0.55
Industry 5464 0.10 5456 0.03 6352 0.07 5842 0.16 5237 0.02
NDT 5852 2.43 6075 2.39 6792 3.43 7166 3.87 7530 2.37
Production and sales 1243 0.67 1573 0.53 1563 0.85 1702 0.41 1912 0.29
Research institutes 2062 0.07 2139 0.05 2232 0.03 2198 0.03 2183 0.02
Educational institutes 4876 0.05 4954 0.05 4816 0.04 4788 0.04 4521 0.06
Public institutes 466 0.02 827 0.61 872 0.57 932 0.42 961 0.41
Military 236 0.05 241 1.81 264 0.02 280 0.03 264 0.08
Nuclear power plant 13,236 1.20 14,758 0.80 15,023 0.73 14,780 0.82 14,253 0.58
Total 37,268 0.96 40,156 0.81 42,290 0.96 42,422 1.07 41,899 0.72
Diagnostic radiation workers Radiation technologist 18,722 1.21 19,791 1.16 20,523 1.01 21,636 0.94 22,419 0.85
Physician 11,661 0.34 12,622 0.36 13,076 0.32 13,738 0.32 14,950 0.31
Dentist 12,822 0.16 13,849 0.18 14,424 0.15 14,905 0.15 15,951 0.15
Dental hygienist 6110 0.13 7088 0.15 7727 0.12 8064 0.12 8912 0.12
Diagnostic radiologist 1468 0.41 1545 0.29 1456 0.32 1448 0.31 1475 0.24
Nurse 2177 0.4 2936 0.37 3171 0.33 3397 0.32 4891 0.22
Nursing assistant 817 0.3 927 0.26 873 0.24 846 0.3 1081 0.19
Medical assistant 161 0.3 198 0.34 168 0.55 222 0.49 329 0.34
Others 1676 0.47 1474 0.42 1517 0.33 1676 0.68 1088 0.34
Total 55,614 0.58 60,430 0.56 62,935 0.48 65,932 0.47 71,096 0.41
  1. Source: 2015 Nuclear Safety yearbook [5] and 2014 Occupational Radiation Exposure in Diagnostic Radiology in Korea [8]
  2. NDT non-destructive testing